/**
  ******************************************************************
  * @file    main.c
  * @author  fire
  * @version V1.0
  * @date    2019-xx-xx
  * @brief   USART—USART2接发例程
  ******************************************************************
  * @attention
  *
  * 实验平台:野火 STM32H750开发板 
  * 论坛    :http://www.firebbs.cn
  * 淘宝    :http://firestm32.taobao.com
  *
  ******************************************************************
  */  
#include "stm32h7xx.h"
#include "main.h"
#include "./usart/bsp_rs232_usart.h"
#include "./delay/core_delay.h"   
volatile uint8_t Rxflag=0;
uint8_t ucTemp;
/**
  * @brief  主函数
  * @param  无
  * @retval 无
  */
int main(void)
{
	uint8_t ucaRxBuf[256];
	uint16_t usRxCount=0; 

	/* 系统时钟初始化成480MHz */
	SystemClock_Config();

	/* 配置串口2为：115200 8-N-1 */
	RS232_USART_Config();
  
	/*调用printf函数，因为重定向了fputc，printf的内容会输出到串口*/
	printf("\r\nPrintf方式输出：这是一个串口中断接收回显实验 \r\n");	

	
	/*自定义函数方式*/
	Usart_SendString((uint8_t *)"自定义函数输出：这是一个串口中断接收回显实验\n" );
	Usart_SendString((uint8_t *)"输入数据并以回车键结束\n" );
	
	/*STM32串口接收到字符后会进入stm32h7xx_it.c文件的中断服务函数，
	*接收该数据，并标记Rxflag标志位。*/
  while(1)
	{	
		/* 
			接收DEBUG_USART口的数据，分析并处理 
			可以将此段代码封装为一个函数，在主程序其它流程调用
		*/
		if(Rxflag)
		{
			if (usRxCount < sizeof(ucaRxBuf))
			{
				ucaRxBuf[usRxCount++] = ucTemp;
			}
			else
			{
				usRxCount = 0;
			}
			
			/* 简单的通信协议，遇到回车换行符认为1个命令帧，可自行加其它判断实现自定义命令 */
			/* 遇到换行字符，认为接收到一个命令 */
			if (ucTemp == 0x0A)	/* 换行字符 */
			{		
				/*检测到有回车字符就把数据返回给上位机*/
				HAL_UART_Transmit( &UartHandle, (uint8_t *)ucaRxBuf,usRxCount,1000 );
				usRxCount = 0;
			}
			Rxflag=0;
            __HAL_UART_ENABLE_IT(&UartHandle,UART_IT_RXNE);    
		}
	}  
}

/**
  * @brief  System Clock 配置
  *         system Clock 配置如下: 
	*            System Clock source  = PLL (HSE)
	*            SYSCLK(Hz)           = 480000000 (CPU Clock)
	*            HCLK(Hz)             = 240000000 (AXI and AHBs Clock)
	*            AHB Prescaler        = 2
	*            D1 APB3 Prescaler    = 2 (APB3 Clock  120MHz)
	*            D2 APB1 Prescaler    = 2 (APB1 Clock  120MHz)
	*            D2 APB2 Prescaler    = 2 (APB2 Clock  120MHz)
	*            D3 APB4 Prescaler    = 2 (APB4 Clock  120MHz)
	*            HSE Frequency(Hz)    = 25000000
	*            PLL_M                = 5
	*            PLL_N                = 192
	*            PLL_P                = 2
	*            PLL_Q                = 4
	*            PLL_R                = 2
	*            VDD(V)               = 3.3
	*            Flash Latency(WS)    = 4
  * @param  None
  * @retval None
  */
/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** 启用电源配置更新
  */
  HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY);
  /** 配置主内稳压器输出电压
  */
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE0);

  while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}
  /** 初始化CPU、AHB和APB总线时钟
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLM = 5;
  RCC_OscInitStruct.PLL.PLLN = 192;
  RCC_OscInitStruct.PLL.PLLP = 2;
  RCC_OscInitStruct.PLL.PLLQ = 2;
  RCC_OscInitStruct.PLL.PLLR = 2;
  RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_2;
  RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;
  RCC_OscInitStruct.PLL.PLLFRACN = 0;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
		while(1);
  }
  /** 初始化CPU、AHB和APB总线时钟
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2
                              |RCC_CLOCKTYPE_D3PCLK1|RCC_CLOCKTYPE_D1PCLK1;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV2;
  RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV2;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2;
  RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV2;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
  {
		while(1);
  }
}
/****************************END OF FILE***************************/